One vertex per element, one color per generator, with an edge from x to x·s.
(9,10,13,16,14,17,23,24)(11,18,20,12,19,21,22,15)(2,6)(4,7)(9,11)(10,15)(12,17)(13,22)(14,19)(16,21)(18,24)(20,23) involution — undirected(1,2)(3,4)(5,6)(7,8)(11,19)(12,15)(13,23)(16,24) involution — undirected(1,3,5,8)(2,7,6,4)(9,12,14,15)(10,11,17,19)(13,21,23,18)(16,20,24,22)(1,4,5,7)(2,3,6,8)(11,19)(12,15)(18,21)(20,22)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.